{"id":4135,"date":"2025-08-20T08:34:00","date_gmt":"2025-08-20T00:34:00","guid":{"rendered":"https:\/\/www.topfastpcb.com\/?p=4135"},"modified":"2025-08-19T15:47:31","modified_gmt":"2025-08-19T07:47:31","slug":"pcb-hasl-and-lead-free-hasl-processes","status":"publish","type":"post","link":"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/","title":{"rendered":"Processi HASL e HASL senza piombo per PCB"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Indice per materie<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#HASL_process\" >Processo HASL<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#11_Differences_between_HASL_and_lead-free_HASL\" >1.1 Differenze tra HASL e HASL senza piombo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#12_Core_HASL_Process_Flow\" >1.2 Flusso del processo HASL principale<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#121_Pre-Treatment_Stage\" >1.2.1 Fase di pretrattamento<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#122_Flux_Application\" >1.2.2 Applicazione del flusso<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#123_Hot_Air_Leveling_Key_Steps\" >1.2.3 Livellamento ad aria calda Fasi principali<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#124_Quality_Inspection\" >1.2.4 Ispezione della qualit\u00e0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#13_Process_Advantages_and_Limitations\" >1.3 Vantaggi e limiti del processo<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#Advantages\" >vantaggi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#Limitations\" >Limitazioni<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#ENIG_Electroless_Nickel_Immersion_Gold_Process\" >Processo ENIG (Electroless Nickel Immersion Gold)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#21_Process_Principles\" >2.1 Principi del processo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#22_Advantages\" >2.2 Vantaggi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#23_Challenges\" >2.3 Le sfide<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#OSP_Organic_Solderability_Preservative\" >OSP (Conservante organico della saldabilit\u00e0)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#31_Process_Principles\" >3.1 Principi del processo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#32_Advantages\" >3.2 Vantaggi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#33_Limitations\" >3.3 Limitazioni<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#Process_Selection_Guide\" >Guida alla selezione del processo<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#41_Comparison\" >4.1 Confronto<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#42_Recommendations\" >4.2 Raccomandazioni<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.topfastpcb.com\/it\/blog\/pcb-hasl-and-lead-free-hasl-processes\/#43_Topfast_Capabilities\" >4.3 Capacit\u00e0 Topfast<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"HASL_process\"><\/span>Processo HASL<span class=\"ez-toc-section-end\"><\/span><\/h2><p>L'HASL (Hot Air Solder Leveling) \u00e8 uno dei processi di trattamento superficiale pi\u00f9 classici ed economici nella produzione di PCB e svolge un ruolo importante nell'industria elettronica. Questo processo consiste nel ricoprire la superficie di rame con uno strato di lega di stagno-piombo per fornire prestazioni di saldatura affidabili e protezione dall'ossidazione per i PCB.<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-1.jpg\" alt=\"Processo HASL\" class=\"wp-image-4137\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-1.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-1-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"11_Differences_between_HASL_and_lead-free_HASL\"><\/span>1.1 Differenze tra HASL e HASL senza piombo<span class=\"ez-toc-section-end\"><\/span><\/h3><p>L'HASL (Hot Air Solder Leveling) \u00e8 una delle tecnologie di trattamento delle superfici pi\u00f9 classiche e convenienti in assoluto. <a href=\"https:\/\/www.topfastpcb.com\/it\/\">Produzione di PCB<\/a>. Questo processo riveste le superfici di rame con uno strato di lega stagno-piombo per garantire una saldabilit\u00e0 affidabile e una resistenza all'ossidazione. Con l'aumento dei requisiti ambientali, l'HASL senza piombo \u00e8 diventato lo standard del settore.<\/p><p><strong>Differenze di composizione dei materiali<\/strong>:<\/p><ul class=\"wp-block-list\"><li>L'HASL tradizionale utilizza una lega Sn63\/Pb37(63% stagno +37% piombo), punto di fusione: 183 \u00b0C.<\/li>\n\n<li>L'HASL senza piombo viene utilizzato principalmente:<\/li>\n\n<li>SAC305 (96,5% stagno+ 3% argento+ 0,5% rame),puntodi fusione: 217-220 \u00b0C<\/li>\n\n<li>SnCu0,7(99,3% stagno +0,7% rame), punto di fusione:227 \u00b0C<\/li>\n\n<li>Stagno puro (Sn100),punto di fusione:232 \u00b0C<\/li><\/ul><p><strong>Confronto tra le caratteristiche del processo<\/strong>:<\/p><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Propriet\u00e0<\/th><th>HASL al piombo<\/th><th>HASL senza piombo<\/th><\/tr><\/thead><tbody><tr><td>Punto di fusione<\/td><td>183 \u00b0C<\/td><td>217-232\u00b0C<\/td><\/tr><tr><td>Temperatura del piatto di saldatura<\/td><td>200-210\u00b0C<\/td><td>240-255\u00b0C<\/td><\/tr><tr><td>Finitura superficiale<\/td><td>Luminoso<\/td><td>Relativamente noioso<\/td><\/tr><tr><td>Resistenza meccanica<\/td><td>Buona duttilit\u00e0 (elevata resistenza agli urti)<\/td><td>Duro ma fragile<\/td><\/tr><tr><td>Bagnabilit\u00e0<\/td><td>Eccellente (angolo di contatto&lt;30\u00b0)<\/td><td>Buono (angolo di contatto 35-45\u00b0)<\/td><\/tr><tr><td>Conformit\u00e0 ambientale<\/td><td>Contiene piombo (37%)<\/td><td>Contenuto di piombo &lt;0,1% (conforme alla direttiva RoHS)<\/td><\/tr><tr><td>costo<\/td><td>Pi\u00f9 basso<\/td><td>15-20% in pi\u00f9<\/td><\/tr><tr><td>Applicabilit\u00e0<\/td><td>Uso generale<\/td><td>Richiede temperature di saldatura pi\u00f9 elevate<\/td><\/tr><\/tbody><\/table><\/figure><p><strong>Differenze di prestazioni pratiche<\/strong>:<\/p><ul class=\"wp-block-list\"><li><strong>Saldabilit\u00e0<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>L'HASL al piombo offre una migliore attivit\u00e0 di saldatura con un tempo di bagnatura pi\u00f9 breve (1-2 secondi).<\/li>\n\n<li>L'HASL senza piombo richiede un flusso pi\u00f9 forte e un controllo pi\u00f9 stretto della temperatura<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>affidabilit\u00e0<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>I giunti di saldatura al piombo presentano una migliore resistenza alla fatica termica (pi\u00f9 cicli di temperatura)<\/li>\n\n<li>Le giunzioni a saldare senza piombo mantengono una maggiore resistenza meccanica dopo un invecchiamento prolungato<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Finestra di processo<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>L'HASL al piombo ha unafinestra di processo pi\u00f9 ampia (\u00b110 \u00b0C)<\/li>\n\n<li>L'HASL senza piombo richiede un controllo dellatemperatura pi\u00f9 rigoroso (\u00b13 \u00b0C)<\/li><\/ul><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Suggerimento professionale: Topfast ottimizza i parametri dell'HASL senza piombo per ottenere una resa di saldatura del 99,5% e soddisfare gli standard IPC-6012 Classe 3.<\/p><\/blockquote><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"12_Core_HASL_Process_Flow\"><\/span>1.2 Flusso del processo HASL principale<span class=\"ez-toc-section-end\"><\/span><\/h3><p>In qualit\u00e0 di produttore professionale di PCB, Topfast impiega linee di produzione HASL completamente automatizzate con processi rigorosamente standardizzati:<\/p><h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"121_Pre-Treatment_Stage\"><\/span>1.2.1 Fase di pretrattamento<span class=\"ez-toc-section-end\"><\/span><\/h4><ul class=\"wp-block-list\"><li><strong>Pulizia chimica<\/strong>:<\/li>\n\n<li>Il detergente acido (pH 2-3) rimuove gli ossidi di rame.<\/li>\n\n<li>Controllo della temperatura: 40-50 \u00b0C,durata: 2-3 min<\/li>\n\n<li>La microincisione garantisce una rugosit\u00e0 superficiale Ra 0,3-0,5 \u03bcm.<\/li>\n\n<li><strong>Risciacquo<\/strong>:<\/li>\n\n<li>Risciacquo in controcorrente atre stadi (resistivit\u00e0dell'acqua deionizzata &gt;15 M\u03a9\u00b7cm)<\/li>\n\n<li>Essiccazione ad ariacalda (60-80\u00b0C)<\/li><\/ul><h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"122_Flux_Application\"><\/span>1.2.2 Applicazione del flusso<span class=\"ez-toc-section-end\"><\/span><\/h4><ul class=\"wp-block-list\"><li>Metodi di applicazione:<\/li>\n\n<li>Schiuma (tradizionale): Spessore del flusso 0,01-0,03 mm<\/li>\n\n<li>Spray (avanzato):Pi\u00f9 uniforme, 30% in meno di consumo di flusso<\/li>\n\n<li>Tipi di flusso:<\/li>\n\n<li>A base di colofonia non pulita (ROH)<\/li>\n\n<li>Contenuto solido: 8-12%, valore acido: 35-45mgKOH\/g<\/li><\/ul><h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"123_Hot_Air_Leveling_Key_Steps\"><\/span>1.2.3 Livellamento ad aria calda Fasi principali<span class=\"ez-toc-section-end\"><\/span><\/h4><ul class=\"wp-block-list\"><li><strong>Preriscaldamento<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Con piombo: 130-140 \u00b0C<\/li>\n\n<li>Senza piombo: 150-160 \u00b0C<\/li>\n\n<li>Durata: 60-90 sec<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Immersione a saldare<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Temperatura della pentola di saldatura:<ul class=\"wp-block-list\"><li>Con piombo: 210\u00b15 \u00b0C<\/li>\n\n<li>Senza piombo: 250\u00b15 \u00b0C<\/li><\/ul><\/li>\n\n<li>Tempo di permanenza:2-4 sec (precisione \u00b10,5 sec)<\/li>\n\n<li>Profondit\u00e0 di immersione: 3-5 mm<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Livellamento ad aria calda<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Parametri della lama d'aria:<ul class=\"wp-block-list\"><li>Pressione: 0,3-0,5MPa<\/li>\n\n<li>Temperatura: 300-350\u00b0C<\/li>\n\n<li>Angolo:inclinazioneverso il basso di4\u00b0<\/li>\n\n<li>Velocit\u00e0 dell'aria: 20-30 m\/s<\/li><\/ul><\/li>\n\n<li>Tempo di elaborazione: 1-2 secondi<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Raffreddamento<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Raffreddamento ad aria forzata(velocit\u00e0: 2-3 \u00b0C\/sec)<\/li>\n\n<li>Temperatura finale &lt;60 \u00b0C<\/li><\/ul><h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"124_Quality_Inspection\"><\/span>1.2.4 Ispezione della qualit\u00e0<span class=\"ez-toc-section-end\"><\/span><\/h4><ul class=\"wp-block-list\"><li>AOI online (copertura del 100%):<\/li>\n\n<li>Controllo dello spessore dellasaldatura (1-40 \u03bcm)<\/li>\n\n<li>Rilevamento dei difetti di superficie (sfere di saldatura, rame esposto, ecc.)<\/li>\n\n<li>Test di campionamento:<\/li>\n\n<li>Prova di saldabilit\u00e0(245 \u00b0C, 3 sec)<\/li>\n\n<li>Test di adesione (metodo del nastro)<\/li><\/ul><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Un'innovazione tecnologica: Il processo HASL senza piombo protetto da azoto di Topfast&#8217;riduce l'ossidazione della saldatura dal 5% all'1,5%, migliorando significativamente la resa della saldatura.<\/p><\/blockquote><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"13_Process_Advantages_and_Limitations\"><\/span>1.3 Vantaggi e limiti del processo<span class=\"ez-toc-section-end\"><\/span><\/h3><h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages\"><\/span>vantaggi<span class=\"ez-toc-section-end\"><\/span><\/h4><ul class=\"wp-block-list\"><li><strong>Efficienza dei costi<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Basso investimento in attrezzature (~1\/3 di ENIG)<\/li>\n\n<li>Significativi risparmi sui costi dei materiali (40-60% in meno rispetto all'ENIG)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Affidabilit\u00e0 delle saldature<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Resistea &gt;3 cicli di rifusione (picco260 \u00b0C)<\/li>\n\n<li>Elevata resistenza alla trazione del giunto (con piombo: 50-60MPa; senza piombo: 55-65MPa)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Ampia applicabilit\u00e0<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Adatto a tamponi di varie dimensioni (passo min. 0,5 mm)<\/li>\n\n<li>Compatibile con i processi di lavorazione a foro passante e SMT<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Prestazioni di archiviazione<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Durata di conservazione di 12 mesi (RH &lt;60%)<\/li>\n\n<li>Eccellente resistenza all'ossidazione (test in nebbia salina di 48 ore)<\/li><\/ul><h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Limitations\"><\/span>Limitazioni<span class=\"ez-toc-section-end\"><\/span><\/h4><ul class=\"wp-block-list\"><li><strong>Restrizioni per il passo fine<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Non adatto per componenti BGA\/QFN con passo da 0,4 mm<\/li>\n\n<li>Rischio di ponti di saldatura per progetti a passo fine<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Problemi di planarit\u00e0<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Irregolarit\u00e0 superficiale: 15-25 \u03bcm (influisce sull'assemblaggio HDI)<\/li>\n\n<li>Variazione di spessore fino a 20 \u03bcm tra tamponigrandi\/piccoli<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Stress termico<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>I processi ad alta temperatura (specialmente quelli senza piombo) possono influire sui materiali ad alta Tg.<\/li>\n\n<li>Rischio di deformazione pi\u00f9 elevato per i pannelli sottili (&lt;0,8 mm)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Considerazioni ambientali<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>HASL al piombo non conforme alla direttiva RoHS<\/li>\n\n<li>L'HASL senza piombo consuma pi\u00f9 energia (temperature superiori di 30-50 \u00b0C)<\/li><\/ul><p>Avete bisogno di un supporto professionale per l'HASL? <a href=\"https:\/\/www.topfastpcb.com\/it\/contact\/\">Contattare i tecnici Topfast<\/a> per soluzioni personalizzate<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-3.jpg\" alt=\"Processo HASL\" class=\"wp-image-4139\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-3.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-3-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-3-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ENIG_Electroless_Nickel_Immersion_Gold_Process\"><\/span>Processo ENIG (Electroless Nickel Immersion Gold)<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"21_Process_Principles\"><\/span>2.1 Principi del processo<span class=\"ez-toc-section-end\"><\/span><\/h3><p>ENIG forma uno strato protettivo composito attraverso la nichelatura elettrolitica e l'oro per immersione:<\/p><ul class=\"wp-block-list\"><li>Strato di nichel: 3-6 \u03bcm (7-9%difosforo)<\/li>\n\n<li>Strato d'oro: 0,05-0,1 \u03bcm<\/li><\/ul><p><strong>Parametri chiave<\/strong>:<\/p><ul class=\"wp-block-list\"><li>Temperatura del bagno di nichel: 85-90\u00b0C<\/li>\n\n<li>Velocit\u00e0 di placcatura:15-20 \u03bcm\/h<\/li>\n\n<li>Temperatura del bagno d'oro: 80-85 \u00b0C<\/li>\n\n<li>pH: Bagno al nichel 4,5-5,0, bagno all'oro 5,5-6,5<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"22_Advantages\"><\/span>2.2 Vantaggi<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Superba planarit\u00e0<\/strong> (Ra&lt;0,1 \u03bcm):<\/li><\/ul><ul class=\"wp-block-list\"><li>Ideale per &lt;passo 0,3 mm BGA\/CSP<\/li>\n\n<li>Coplanarit\u00e0 del pad &lt;5 \u03bcm\/m<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Resistenza all'ossidazione<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Durata di conservazione di 18 mesi<\/li>\n\n<li>Certificato J-STD-003B Classe 3<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Conducibilit\u00e0 elettrica<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Resistivit\u00e0 dell'oro: 2,44 \u03bc\u03a9\u00b7cm<\/li>\n\n<li>Resistenza di contatto &lt;10 m\u03a9<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"23_Challenges\"><\/span>2.3 Le sfide<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Problema del cuscinetto nero<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Cause: Sovrametallizzazione del nichel o contenuto anomalo di fosforo<\/li>\n\n<li>Soluzione:La passivazione brevettata Topfast&#8217;riduce il tasso di black pad allo &lt;0,1%.<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Fattori di costo<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Alti costi dei materiali (volatilit\u00e0 del prezzo dell'oro)<\/li>\n\n<li>Processo complesso (8-10 fasi)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Resistenza del giunto a saldare<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Strato IMC Ni-Au fragile<\/li>\n\n<li>Resistenza alla trazione ~40-45MPa<\/li><\/ul><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>L'ENIG di Topfast raggiunge un'uniformit\u00e0 dellospessore paria \u00b110%, superando gli standard industriali pari a \u00b115%.<\/p><\/blockquote><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"OSP_Organic_Solderability_Preservative\"><\/span>OSP (Conservante organico della saldabilit\u00e0) <span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"31_Process_Principles\"><\/span>3.1 Principi del processo<span class=\"ez-toc-section-end\"><\/span><\/h3><p>L'OSP forma una pellicola protettiva organica di 0,2-0,5 \u03bcm sul rame nudo, contenente:<\/p><ul class=\"wp-block-list\"><li>Composti del benzotriazolo<\/li>\n\n<li>Composti imidazolici<\/li>\n\n<li>Acidi carbossilici<\/li><\/ul><p><strong>Flusso di processo<\/strong>:<\/p><ol class=\"wp-block-list\"><li>Pulizia acida (5% H2SO4, 2min)<\/li>\n\n<li>Micro-incisione (Na2S2O8, rimuovere 1-2 \u03bcm di rame)<\/li>\n\n<li>Trattamento OSP (40-50 \u00b0C, 1-2min)<\/li>\n\n<li>Essiccazione (aria calda a 60-80 \u00b0C)<\/li><\/ol><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"32_Advantages\"><\/span>3.2 Vantaggi<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Economicamente vantaggioso<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>60% in meno rispetto all'HASL<\/li>\n\n<li>Basso investimento in attrezzature (~1\/5 di ENIG)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Integrit\u00e0 del segnale<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Costante dielettricastabile (\u0394Dk&lt;0,02)<\/li>\n\n<li>Ideale per applicazioni ad alta frequenza (&gt;10GHz)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Ecologico<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Assenza di metalli pesanti<\/li>\n\n<li>Trattamento semplificato delle acque reflue<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"33_Limitations\"><\/span>3.3 Limitazioni<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Finestra di saldabilit\u00e0<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Da utilizzare entro 24 ore dall'apertura<\/li>\n\n<li>Adatto solo per 1 ciclo di riflusso (la resa scende del 30% per il secondo riflusso)<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Difficolt\u00e0 di ispezione<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>Difficile misurare otticamente lo spessore del film<\/li>\n\n<li>Richiede un trattamento TIC speciale<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Condizioni di conservazione<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>\u00c8 richiesto il confezionamento sottovuoto (RH &lt;30%)<\/li>\n\n<li>Temperatura di conservazione: 15-30 \u00b0C<\/li><\/ul><blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>L'OSP migliorato di Topfast estende la durata di conservazione da 3 a 6 mesi e resiste a 2 cicli di rifusione.<\/p><\/blockquote><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-2.jpg\" alt=\"Processo HASL\" class=\"wp-image-4138\" srcset=\"https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-2.jpg 600w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-2-300x201.jpg 300w, https:\/\/www.topfastpcb.com\/wp-content\/uploads\/2025\/08\/HASL-process-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><\/div><h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Process_Selection_Guide\"><\/span>Guida alla selezione del processo<span class=\"ez-toc-section-end\"><\/span><\/h2><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"41_Comparison\"><\/span>4.1 Confronto<span class=\"ez-toc-section-end\"><\/span><\/h3><figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>parametro<\/th><th>HASL<\/th><th>ENIG<\/th><th>OSP<\/th><\/tr><\/thead><tbody><tr><td>costo<\/td><td>$<\/td><td>$$$<\/td><td>$<\/td><\/tr><tr><td>Piattezza<\/td><td>\u25b3 (15-25 \u03bcm)<\/td><td>\u25ce (&lt;5\u03bcm)<\/td><td>\u25cb (&lt;10 \u03bcm)<\/td><\/tr><tr><td>Saldabilit\u00e0<\/td><td>\u25ce (3 riflussi)<\/td><td>\u25cb (5 riflussi)<\/td><td>\u25b3 (1-2 riflussi)<\/td><\/tr><tr><td>Durata di conservazione<\/td><td>12mo<\/td><td>18mo<\/td><td>6mo<\/td><\/tr><tr><td>Min. Passo<\/td><td>0,5 mm<\/td><td>0,3 mm<\/td><td>0,4 mm<\/td><\/tr><tr><td>Ecologico<\/td><td>Senza piombo OK<\/td><td>Eccellente<\/td><td>Eccellente<\/td><\/tr><tr><td>domande<\/td><td>Elettronica di consumo<\/td><td>Circuiti integrati ad alta densit\u00e0<\/td><td>Giro rapido<\/td><\/tr><\/tbody><\/table><\/figure><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"42_Recommendations\"><\/span>4.2 Raccomandazioni<span class=\"ez-toc-section-end\"><\/span><\/h3><ul class=\"wp-block-list\"><li><strong>Elettronica di consumo<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>HASL senza piombo (miglior rapporto costo\/prestazioni)<\/li>\n\n<li>Controllo del volume della pasta saldante per componenti a passo fine<\/li><\/ul><ul class=\"wp-block-list\"><li><strong><a href=\"https:\/\/www.topfastpcb.com\/it\/products\/hdi-pcb\/\">Schede HDI<\/a><\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>ENIG (planarit\u00e0 superiore)<\/li>\n\n<li>Rigoroso controllo di qualit\u00e0 del nichel<\/li><\/ul><ul class=\"wp-block-list\"><li><strong><a href=\"https:\/\/www.topfastpcb.com\/it\/products\/high-speed-pcb\/\">PCB ad alta velocit\u00e0<\/a><\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>OSP\/ENIG (migliore integrit\u00e0 del segnale)<\/li>\n\n<li>Evitate la superficie irregolare dell'HASL&#8217;e...<\/li><\/ul><ul class=\"wp-block-list\"><li><strong>Prototipazione<\/strong>:<\/li><\/ul><ul class=\"wp-block-list\"><li>OSP (tempi di consegna pi\u00f9 rapidi)<\/li>\n\n<li>Garantire un assemblaggio tempestivo<\/li><\/ul><h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"43_Topfast_Capabilities\"><\/span>4.3 Capacit\u00e0 Topfast<span class=\"ez-toc-section-end\"><\/span><\/h3><p>Soluzioni complete per la finitura delle superfici:<\/p><ul class=\"wp-block-list\"><li>20 linee HASL automatizzate (500.000 m\u00b2\/mese)<\/li>\n\n<li>10 linee ENIG (uniformit\u00e0 dello spessore \u00b18%)<\/li>\n\n<li>5 linee OSP (disponibili anche nano potenziate)<\/li>\n\n<li>Ispezione in linea al 100% (AOI+SPI)<\/li><\/ul><p><a href=\"https:\/\/www.topfastpcb.com\/it\/contact\/\">Scarica la guida alla selezione della finitura superficiale dei PCB<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Processo di livellamento ad aria calda HASL, compresa la composizione della lega, il flusso del processo e le differenze di prestazioni tra HASL con e senza piombo. Un'analisi dettagliata delle caratteristiche e degli scenari applicativi dei processi di galvanizzazione ENIG e di antiossidazione OSP. In qualit\u00e0 di produttore professionale di PCB, Topfast possiede capacit\u00e0 complete di trattamento delle superfici e un solido sistema di controllo della qualit\u00e0, che ci consentono di fornire soluzioni ottimali di trattamento delle superfici per vari prodotti elettronici.<\/p>","protected":false},"author":1,"featured_media":4136,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112],"tags":[351,260],"class_list":["post-4135","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-hasl-processes","tag-pcb-manufacturing-process"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PCB HASL and Lead-Free HASL Processes - Topfastpcb<\/title>\n<meta name=\"description\" content=\"Topfast provides professional and reliable PCB manufacturing services. 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